US20050188462A1 - Movable control panel for a patient support - Google Patents

Movable control panel for a patient support Download PDF

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Publication number
US20050188462A1
US20050188462A1 US11/040,272 US4027205A US2005188462A1 US 20050188462 A1 US20050188462 A1 US 20050188462A1 US 4027205 A US4027205 A US 4027205A US 2005188462 A1 US2005188462 A1 US 2005188462A1
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United States
Prior art keywords
link
controller
siderail
arm
movement
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US11/040,272
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US7200882B2 (en
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Richard Heimbrock
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Hill Rom Services Inc
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Individual
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Priority to CA002493696A priority Critical patent/CA2493696A1/en
Priority to US11/040,272 priority patent/US7200882B2/en
Assigned to HILL-ROM SERVICES, INC. reassignment HILL-ROM SERVICES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HEIMBROCK, RICHARD H
Publication of US20050188462A1 publication Critical patent/US20050188462A1/en
Priority to US11/695,802 priority patent/US7430771B2/en
Publication of US7200882B2 publication Critical patent/US7200882B2/en
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Assigned to JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT reassignment JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ALLEN MEDICAL SYSTEMS, INC., ASPEN SURGICAL PRODUCTS, INC., HILL-ROM SERVICES, INC., WELCH ALLYN, INC.
Assigned to JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT reassignment JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT SECURITY AGREEMENT Assignors: ALLEN MEDICAL SYSTEMS, INC., ASPEN SURGICAL PRODUCTS, INC., HILL-ROM SERVICES, INC., WELCH ALLYN, INC.
Assigned to WELCH ALLYN, INC., ANODYNE MEDICAL DEVICE, INC., MORTARA INSTRUMENT SERVICES, INC., HILL-ROM SERVICES, INC., Voalte, Inc., HILL-ROM, INC., MORTARA INSTRUMENT, INC., ALLEN MEDICAL SYSTEMS, INC., HILL-ROM COMPANY, INC. reassignment WELCH ALLYN, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: JPMORGAN CHASE BANK, N.A.
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05Parts, details or accessories of beds
    • A61G7/0507Side-rails
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05Parts, details or accessories of beds
    • A61G7/0507Side-rails
    • A61G7/0508Side-rails characterised by a particular connection mechanism
    • A61G7/0509Side-rails characterised by a particular connection mechanism sliding or pivoting downwards
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05Parts, details or accessories of beds
    • A61G7/0507Side-rails
    • A61G7/0524Side-rails characterised by integrated accessories, e.g. bed control means, nurse call or reading lights
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00General characteristics of devices
    • A61G2203/70General characteristics of devices with special adaptations, e.g. for safety or comfort
    • A61G2203/72General characteristics of devices with special adaptations, e.g. for safety or comfort for collision prevention
    • A61G2203/726General characteristics of devices with special adaptations, e.g. for safety or comfort for collision prevention for automatic deactivation, e.g. deactivation of actuators or motors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018Control or drive mechanisms

Definitions

  • the present device generally relates to a control for a patient support (such as a hospital bed), and more particularly to a controller connected to the patient support such that movement of a support structure of the patient support (for example, a siderail) between a raised position and a lowered position relative to the patient support causes movement of the controller between a deployed position and a stored position, respectively.
  • a support structure of the patient support for example, a siderail
  • controllers for a patient support, such as a hospital bed, to enable a user to perform a variety of functions including adjusting the bed configuration by, for example, raising or lowering the bed, tilting the bed, or raising, lowering, and/or tilting a portion of the bed relative to another portion of the bed.
  • Conventional controllers are either built into the siderail of the bed, or are provided as pendants that may be stored in the siderail and removed from the siderail for use.
  • Built in controllers generally provide an input surface having individual control switches for the various adjustment functions. The input surface is typically planar with a side surface of the siderail, facing the patient in the bed. This is a very poor ergonomic position.
  • Pendant controllers also have many disadvantages. While pendant controllers may be handheld, avoiding some of the ergonomic problems of built in controllers, pendant controllers may be stolen, lost, misplaced, dropped to the floor or otherwise rendered difficult or impossible to access by a patient in the bed. Moreover, pendant controllers may be damaged when dropped. Even pendant controllers that are tethered to the bed by a tether or an electrical cord may be located outside of an area that is conveniently accessible by the patient. For example, a tethered pendant controller may be located within the bed coverings or over the side of the bed, dangling from the tether. Indeed, tethered pendant controllers are further disadvantageous in that they present a choking hazard. Moreover, tethered pendant controllers are relatively difficult to clean, thereby presenting other heath hazards.
  • a controller for a bed is connected to a siderail of the bed so that movement of the siderail to a raised position causes movement of the controller to a deployed position which is ergonomically accessible by the patient. Additionally, movement of the siderail to a lowered position causes movement of the controller to a stored position.
  • FIG. 1 is a partially fragmented, perspective view of one embodiment of a controller with a siderail in the raised position.
  • FIG. 2A is a partially fragmented, side elevation view of the embodiment of FIG. 1 with the siderail in the lowered position.
  • FIG. 2B is a partially fragmented, side elevation view of the embodiment of FIG. 1 with the siderail in the raised position.
  • FIGS. 3 A-C are partially fragmented, side elevation views of certain components of the embodiment of FIG. 1 , showing the siderail in the raised, intermediate, and lowered positions, respectively.
  • FIGS. 4 A-C are partially fragmented, front elevation views corresponding to FIGS. 3 A-C, respectively.
  • FIGS. 5 A-E are partially fragmented, front elevation views of another embodiment of a controller with a siderail, showing the interaction between various components as the siderail is moved between the raised position and the lowered position.
  • FIG. 6A is a partially fragmented, front elevation view of another embodiment of a controller with a siderail, showing the siderail in the raised position and the controller in the deployed position.
  • FIG. 6B is a partially fragmented, front elevation view of the embodiment of FIG. 6A with the controller approaching the stored position.
  • FIG. 7 is a partially fragmented, perspective view of another embodiment of a controller with a siderail in the raised position.
  • an embodiment of a control panel of the present invention includes a controller 18 coupled to a support structure of a patient support (not shown) by a linkage mechanism 16 .
  • the support structure is a siderail 12 , which in turn is coupled to a hospital bed (not shown) by a linkage assembly 14 .
  • the siderail is generally coupled to the head end of the bed, so as to be adjacent to the patient's head, upper body, or torso, but may also be coupled to the foot end or other portion of the bed.
  • controller 18 may be coupled to an overbed table or a table or other structure positioned adjacent to a bed, or to a handle or an armrest of a wheel chair.
  • Siderail 12 may be formed in a conventional shape, and out of conventional materials.
  • Siderail 12 includes a head end 20 , positioned adjacent a head or upper torso of a patient when siderail 12 is connected to a hospital bed, a foot end 22 , positioned nearer to the feet of the patient than head end 20 , a top side 24 , a bottom side 26 , a mattress side 28 which faces a mattress (not shown) of the bed, and a caregiver side 30 which faces away from the mattress.
  • Siderail 12 may define an opening 32 as shown in FIG. 1 and found in conventional siderails. Adjacent foot end 22 , siderail 12 may define a recess 34 shaped to receive controller 18 , as will be described in greater detail below. Siderail 12 may be formed such that it has an outer shell 36 that defines an interior space 38 . As such, siderail 12 may include an inner wall 40 and an outer wall 42 .
  • Linkage assembly 14 may be similar to the linkage assembly described in U.S. patent application publication number U.S. 2002/0066142 (“the '142 publication), owned by the assignee of the present application, the entire disclosure of which is incorporated herein by this reference. As shown in FIGS. 1 and 2 A-B, such a linkage assembly 14 includes an upper link 50 that may be connected to outer wall 42 of siderail 12 , a pair of siderail articulation arms 52 , 54 that extend between upper link 50 and a bed frame 56 , such as the intermediate frame of a hospital bed. Linkage assembly 14 further includes a center arm 58 that extends between frame 56 and a bracket 60 connected to outer wall 42 .
  • Bracket 60 includes a pair of flanges 61 , 63 that extend substantially perpendicularly outward from outer wall 42 .
  • Upper link 50 may include a central portion 62 and a pair of end portions 64 , 66 .
  • End portion 64 includes a pair of flanges 68 , 70 that extend substantially perpendicularly outward from outer wall 42 .
  • end portion 66 includes a pair of flanges 72 , 74 that extend substantially perpendicularly outward from outer wall 42 .
  • Arm 52 of linkage assembly 14 includes a first end 76 having an opening (not shown) sized to receive a rod 78 .
  • Rod 78 extends through first end 76 and between flanges 68 , 70 .
  • Arm 52 can pivot about rod 78 relative to flanges 68 , 70 .
  • Arm 52 further includes a second end 80 having an opening 82 .
  • a second rod 84 extends through opening 82 to permit pivotal movement of second end 80 relative to frame 56 .
  • Arm 54 is substantially identical to arm 52 . Therefore, the components of arm 54 shown in the figures use the same reference designations as the components of arm 52 , but increased by 10 .
  • Arm 52 also includes a projection 90 , which may be part of linkage mechanism 16 as is further described below.
  • Center arm 58 similarly includes a first end 92 having an opening (not shown) sized to receive a rod 94 , and a second end 96 having an opening (not shown) sized to receive a rod 98 .
  • Rod 94 extends through first end 92 and between flanges 61 , 63 so that first end 92 is pivotable about rod 92 relative to bracket 60 .
  • Rod 98 likewise extends through second end 96 of center arm 58 and is coupled to frame 56 to permit pivotal movement of second end 96 relative to frame 56 .
  • linkage mechanism 16 generally includes projection 90 connected to first end 76 of arm 52 , a first link 100 , a second link 102 , a third link 104 , a fourth link 106 , and an arm 108 connected to controller 18 as is further described below.
  • Projection 90 is rigidly connected to first end 76 of arm 52 , and extends therefrom in substantially parallel relationship to outer wall 42 when siderail 12 is in the raised position as shown in FIG. 1 .
  • Projection 90 includes an opening 110 for receiving a portion of first link 100 .
  • First link 100 includes a first end 112 that extends through opening 110 of projection 90 , and provides a retainer portion 114 that curves relative to a longitudinal axis of first link 100 to retain first end 112 in opening 110 during actuation of linkage mechanism 16 as is further described below.
  • First link 100 further includes a second end 116 that extends through an opening 118 of second link 102 .
  • Second end 116 similarly provides a retainer portion 120 that curves relative to the longitudinal axis of first link 100 to retain second end 116 in opening 118 during actuation of linkage mechanism 16 . It should be understood, however, that either or both of retainer portions 114 , 120 , as well as openings 110 , 118 , may be replaced with any of a variety of different types of conventional movable connections.
  • second link 102 includes a first end 122 that defines opening 118 , and a second end 124 .
  • second end 124 is rigidly connected to third link 104 such that together, second link 102 and third link 104 form a unitary “V-link” configuration.
  • second end 124 of second link 102 is rigidly connected to a first end 126 of third link 104 .
  • Third link 104 also includes a second end 128 that defines an opening 130 .
  • a pin 132 mounted to outer wall 42 extends through openings (not shown) or into a bore (not shown) located at the intersection of second end 124 of second link 102 and first end 126 of third link 104 so that the “V-link” configuration pivots about pin 132 .
  • Fourth link 106 in one embodiment, includes a first end 134 having a retainer portion 136 that extends through opening 130 to retain first end 134 in opening 130 during actuation of linkage mechanism 16 , a body 137 , and a second end 138 having a retainer portion 140 which is coupled to arm 108 to retain second end 138 in engagement with arm 108 during actuation of linkage mechanism 16 .
  • Controller 18 generally includes a housing 142 in which are housed conventional electronics (not shown) for performing various functions. The electronics may be routed in any suitable manner to various actuation mechanisms (not shown) or other devices for carrying out the various functions. Housing 142 also defines an input surface 144 including a plurality of control switches 146 that permit the patient (or other person) to select one or several of the various functions. It should be understood that one of ordinary skill in the art could readily configure control switches 146 to control any type of function, including bed adjustment functions, television and radio controls, nurse call functions, room environmental controls, etc. Housing 142 also includes a pair of side walls 148 , 150 , a pair of end walls 152 , 154 , and a top wall 156 opposite input surface 144 .
  • arm 108 is connected to housing 142 of controller 18 such that movement of fourth link 106 results in movement of controller 18 about a pin 109 into and out of recess 34 as is described in detail below. It should be understood, however, that controller 18 need not move into and out of a recess 34 , but instead may simply move into and out of a stored position, which may or may not be in direct contact with siderail 12 .
  • FIGS. 2 A-B show the basic movement of control panel 10 of FIG. 1 .
  • arms 52 , 54 (only arm 52 is shown), and center arm 58 extend downwardly from frame 56 .
  • top surface 24 may be supported below an upper surface 160 of a deck 162 for supporting a mattress (not shown).
  • controller 18 is in its stored position.
  • linkage assembly 14 pivots outwardly and upwardly relative to frame 56 , and may maintain siderail 12 in a substantially perpendicular orientation, as described in detail in the '142 Publication referenced above.
  • This movement of linkage assembly 14 causes actuation of linkage mechanism 16 (as described in greater detail below), which in turn causes controller 18 to move from its stored position to its deployed or use position as shown in FIG. 2B .
  • controller 18 remains in its stored position during a portion of the travel of siderail 12 between the lowered position the raised position.
  • controller 18 when siderail 12 is being moved toward the raised position, controller 18 does not begin to move out of the stored position until siderail 12 has moved to an intermediate position (i.e., between the lowered position and the raised position) that would permit deployment of controller 18 without risking interference of controller 18 with another structure, such as deck 162 .
  • controller 18 moves from its deployed position to its stored position before the movement of siderail 12 places controller 18 in a position of likely interference with another structure, such as deck 162 .
  • FIG. 2B when siderail 12 is in the raised position, top side 24 of siderail 12 is positioned well above upper surface 160 , and controller 18 extends from siderail 12 in the deployed position.
  • controller 18 When in the deployed position, controller 18 is supported at an angle from siderail 12 and at an angle and height relative to deck 162 such that a person in the bed can easily reach control switches 146 to actuate selected functions.
  • FIGS. 3A and 4A depict siderail 12 in the raised position.
  • arm 52 is positioned such that projection 90 extends substantially upwardly, thereby positioning first end 112 of first link 100 at a height A relative to pin 132 , which is at height X, and relative to rod 78 , which is at height Y.
  • arm 54 and center arm 58 also support siderail 12 , but neither is shown in these figures.
  • the distance between pin 132 (height X) and rod 78 (height Y) remains substantially fixed as siderail 12 is moved between the raised position and the lowered position.
  • second end 116 of first link 100 and first end 122 of second link 102 are in a position above height X.
  • first end 76 of arm 52 pivots about rod 78 in the direction of arrow E ( FIG. 3B ).
  • projection 90 also pivots about rod 78 , pulling first link 100 downwardly relative to pin 132 .
  • first end 112 of first link 100 is at height B. As can be seen by comparing the figures, height B is closer to height Y than height A is to height Y.
  • first end 122 of second link 102 is positioned substantially at height X when siderail 12 is in the intermediate position as a result of projection 90 moving from height A to height B. Since second end 124 of second link 102 is rigidly connected to first end 126 of third link 104 at pin 132 , movement of first end 122 of second link 102 downwardly causes rotation of second link 102 and third link 104 about pin 132 in a counter-clockwise direction. Consequently, second end 128 of third link 104 moves to the left as is best depicted in FIG. 4B .
  • first end 76 of arm 52 pivots farther about rod 78 in the direction of arrow E.
  • projection 90 is positioned below height Y, at height C. This additional downward movement of projection 90 pulls first link 100 farther downwardly, such that second end 116 of first link 100 is below height X (i.e., below pin 132 ). Consequently, second link 102 and third link 104 pivot farther in a counter-clockwise direction about pin 132 . This causes second end 128 of third link 104 to move farther to the left (as viewed in the figures), thereby causing controller 18 to move from its deployed position to its stored position as is described in greater detail below.
  • movement of second end 128 of third link 104 causes controller 18 to move from its deployed position to its stored position as a result of leftward movement of fourth link 106 (depicted in FIG. 1 ).
  • leftward movement of fourth link 106 causes second end 138 of fourth link 106 to urge arm 108 toward the left.
  • This causes arm 108 and controller 18 to pivot in a clockwise direction about pin 109 ( FIG. 5A ).
  • controller 18 moves along the arc F ( FIG. 1 ) into recess 34 .
  • fourth link 106 is replaced with a different embodiment fourth link 170 .
  • Other features, such as a latch 172 and a release mechanism 174 are also shown.
  • Fourth link 170 includes a body 176 having a first end 178 and a second end 180 .
  • Body 176 further defines a first slot 182 and a second slot 184 .
  • Slot 182 includes a first end 182 A and a second end 182 B, and is configured to receive a first end 185 of a drive link 186 of release mechanism 174 as is further described below.
  • slot 184 includes a first end 184 A and a second end 184 B, and is configured to receive a pin 188 , which is connected to a first end 190 of arm 108 .
  • First end 178 of fourth link 170 is connected to end 128 of third link 104 by a pin 191 .
  • Latch 172 generally includes a body 192 which is pivotally connected by a pin 194 to outer shell 36 of siderail 12 adjacent mattress side 28 .
  • Body 192 includes a lever arm 196 having an engagement surface 198 , a spring arm 200 , and a tab 202 .
  • tab 202 When in a latched position as shown, for example, in FIG. 5A , tab 202 extends through an opening 204 formed in a side wall 206 of recess 34 , and is configured to engage a notch 205 formed in end wall 152 of controller 18 as is further described below.
  • spring arm 200 is positioned adjacent an engagement surface 208 on an interior side of shell 36 .
  • Release mechanism 174 generally includes drive link 186 (mentioned above), a release body 210 , and an actuator 212 positioned below engagement surface 198 of lever arm 196 .
  • Release body 210 includes a cam surface 214 configured to engage actuator 212 as described below, and a finger 216 .
  • Finger 216 is sized to fit within a channel 218 formed by a support 220 connected to or integral with a lower wall 222 of recess 34 .
  • a second end 187 of drive link 186 is connected to release body 210 as shown in the figures.
  • Actuator 212 includes a body 226 having a central slot 228 , and a bracket 230 connected to an interior surface of outer shell 36 .
  • Slot 228 of body 226 is formed to receive a pin 232 extending from bracket 230 .
  • Pin 232 is configured, on the other hand, to retain body 226 on bracket 230 , but to permit upward and downward movement of body 226 .
  • Bracket 230 includes a pair of flanges 234 , 236 which extend substantially perpendicularly away from the interior surface of shell 36 to guide body 226 through its upward movement into engagement with engagement surface 198 of lever arm 196 and its downward movement out of engagement with engagement surface 198 , as is further described below.
  • various other configurations are possible for actuator 212 .
  • body 226 may include a pin or pins that move within a slot or slots formed in bracket 230 . Any configuration is suitable so long as body 226 is movable (as a result of contact with release body 210 ) into and out of engagement with engagement surface 198 of latch body 192 .
  • linkage mechanism 16 when siderail 12 is in the raised position, linkage mechanism 16 is in substantially the same position as shown in FIGS. 3A and 4A .
  • first end 190 of arm 108 is adjacent end 184 B of slot 184 .
  • Arm 108 extends through a slot 207 formed in lower wall 222 and side wall 206 of recess 34 .
  • first end 185 of drive link 186 is adjacent end 182 B of slot 182 .
  • the relative position of first end 190 of arm 108 to slot 184 , and the relative position of first end 185 of drive link 186 to slot 182 changes with movement of linkage mechanism 16 as siderail 12 is moved between the lowered position to the raised position.
  • controller 18 is in the deployed position, wherein control switches 146 ( FIG. 1 ) are relatively easily accessible by a user.
  • input surface 144 of controller 18 forms an angle G relative to lower wall 222 of recess 34 .
  • angle G is approximately 115 degrees.
  • siderail 12 is shown in a first intermediate position between the raised position of FIG. 5A and the lowered position of FIG. 5E .
  • this intermediate position siderail 12 has just begun to be lowered from the raised position.
  • arm 52 of linkage assembly 14 pivots about rod 78 , thereby moving projection 90 downwardly relative to pin 132 (which is at height X), as explained above with reference to FIGS. 3 A-C and 4 A-C. Consequently, first link 100 moves downwardly, the combination of second link 102 and third link 104 pivot in a counter-clockwise direction about pin 132 , and fourth link 170 moves to the left as viewed in the figures.
  • FIG. 5C shows siderail 12 at a second intermediate position between the raised position and the lowered position.
  • arm 52 now extending directly out of the page
  • first link 100 (not shown in FIG. 5C ) farther downwardly relative to pin 132 .
  • this downward movement causes counter-clockwise rotation of second link 102 and third link 104 about pin 132 , and leftward movement of fourth link 170 .
  • the additional leftward movement (relative to FIG. 5B ) of fourth link 170 causes arm 108 and controller 18 to pivot about pin 109 . More specifically, first end 190 of arm 108 engages end 184 A of slot 184 and is urged toward the left.
  • arm 108 is rigidly connected to housing 142 of controller 18 , and since housing 142 is pivotally supported on siderail 12 by pin 109 , leftward movement of first end 190 of arm 108 causes clockwise rotation of arm 108 and controller 18 about pin 109 .
  • fourth link 170 has now moved sufficiently to the left that first end 185 of drive link 186 is adjacent end 182 A of slot 182 .
  • FIG. 5D shows a third intermediate position of siderail 10 .
  • arm 52 of linkage assembly 14 has rotated farther about rod 78 , and projection 90 is now positioned below rod 78 . Consequently, first link 100 has been pulled farther downwardly, and second link 102 and third link 104 have rotated farther about pin 132 in a counter-clockwise direction.
  • fourth link 170 is positioned farther to the left (relative to FIG. 5C ). This leftward movement of fourth link 170 causes controller 18 to pivot farther about pin 109 as end 184 A of slot 184 drives first end 190 of arm 108 farther to the left. As shown, controller 18 is very nearly in its stored position.
  • FIG. 5D shows actuator body 226 near the top of its travel within bracket 230 , wherein the upper surface of body 226 has engaged engagement surface 198 of lever arm 196 and urged latch 172 to its unlatched position. More specifically, lever arm 196 is urged upwardly against the biasing force of spring arm 200 , which is also engaged by engagement surface 208 of shell 36 . As lever arm 196 is urged upwardly, body 192 of latch 172 pivots in a counter-clockwise direction about pin 194 . This counter-clockwise pivoting causes tab 202 of latch 172 to retract from opening 204 into the interior of siderail 12 . Thus, as siderail 12 is moved farther downwardly into its lowered position, and controller 18 pivots farther clockwise into its stored position, tab 202 will be retracted to avoid interference with end wall 152 of controller housing 142 .
  • FIG. 5E shows siderail 12 in its lowered position and controller 18 in its stored position.
  • arm 52 has pivoted to its fullest extent about pin 78 , thereby moving projection 90 to its lowermost position (i.e., height C as shown in FIG. 3C ).
  • first link 100 is at its lowest position
  • second link 102 and third link 104 are at a position corresponding to their maximum counter-clockwise rotation about pin 132 .
  • fourth link 170 has also moved farther to the left (relative to its position in FIG. 5D ) as a result of the rotation of second link 102 and third link 104 .
  • This leftward movement has caused first end 184 A of slot 184 to urge first end 190 of arm 108 farther to the left, thereby causing arm 108 and controller 18 to pivot farther clockwise about pin 109 until controller 18 reaches its stored position as shown in FIG. 5E .
  • the leftward movement of fourth link 170 causes first end 182 A of slot 182 to urge drive link 186 (and release body 210 ) to the left so that cam surface 214 of release body 210 moves out of engagement with actuator body 226 .
  • actuator body 226 moves downwardly under the force of gravity and the biasing force of spring arm 200 of latch 172 .
  • the delay before controller 18 begins to move toward its stored position as siderail 12 is moved out of its raised position can be changed by adjusting, for example, the length and/or position of slot 184 .
  • the timing of actuation of latch 172 may be changed by adjusting, for example, the length and/or position of slot 182 .
  • the relative timing of movement of controller 18 into its stored position and movement of latch 172 from its latched to its unlatched position may be changed by adjusting, for example, the relative locations of end 184 A of slot 184 and end 182 A of slot 182 . Any of a variety of other adjustments are within the scope of this disclosure and the ability of a skilled artisan.
  • fourth link 170 moves sufficiently to the right that first end 185 of drive link 186 engages end 182 B of slot 182 , and release body 210 (specifically, cam surface 214 ) is pulled under actuator 212 .
  • This causes actuator body 226 to move upwardly into engagement with engagement surface 198 of latch 172 .
  • Latch 172 then rotates counter-clockwise against the biasing force of spring arm 200 , retracting tab 202 from notch 205 of controller 18 .
  • fourth link 170 has moved sufficiently to the right that first end 190 of arm 108 engages end 184 B of slot 184 and is pulled to the right, causing arm 108 and controller 18 to pivot in a counter-clockwise direction about pin 109 .
  • actuator body 226 moves down and latch 172 pivots in a clockwise direction to its latched position as shown in FIG. 5C .
  • Additional upward movement of siderail 12 (and corresponding rightward movement of fourth link 170 ) results in movement of release body 210 farther to the right of actuator 212 and farther counter-clockwise pivoting of controller 18 about pin 109 until it reaches its deployed position shown in FIG. 5A .
  • controller 18 reaches its deployed position at approximately the same time that siderail 12 reaches its raised position.
  • FIGS. 6 A-B depict yet another embodiment of a control panel 10 .
  • siderail 12 is configured to permit movement of controller 18 between the stored and deployed positions while siderail 12 remains in the raised position.
  • controller 18 is manually moved to its stored position while siderail 12 is in its raised position, it may also be desirable to permit manual movement of controller 18 out of its stored position, and back into its deployed position while siderail 12 remains in its raised position.
  • FIGS. 6 A-B provides these features.
  • FIGS. 6 A-B is substantially similar to the embodiment of FIGS. 5 A-E, except that latch 172 is reconfigured as latch 250 , a manual release 260 is added, and the connection between arm 108 and controller 18 is reconfigured. Accordingly, common components will not be described, and will retain their original reference designations.
  • Latch 250 is substantially the same as latch 172 , except that unlike body 192 , body 252 is shaped to include a second engagement surface 254 on an upper portion of body 252 as viewed in the figures. It should be noted that second engagement surface 254 , unlike engagement surface 198 , is on the left side of pin 194 in this embodiment.
  • Manual release 260 includes a housing 262 mounted within an opening (not shown) in shell 36 of siderail 12 , a button 264 movably mounted within housing 262 , a shaft 266 connected to or integral with button 264 , and a spring 268 connected between housing 262 and shaft 266 .
  • spring 268 which is connected at one end (not shown) to housing 262 and at the other end (not shown) to shaft 266 , is in a substantially unextended state.
  • spring 268 may retain shaft 266 just above, or in slight contact with engagement surface 254 of body 252 .
  • connection between arm 108 and controller 18 in the embodiment of FIGS. 6 A-B is a movable connection, unlike the rigid connection of the embodiment of FIGS. 5 A-E. More specifically, controller 18 is permitted to rotate about pin 109 while arm 108 remains in a fixed position relative to pin 109 .
  • a spring 270 is disposed within a cavity 272 formed in housing 142 of controller 18 .
  • Spring 270 includes a first end 274 that is attached to a second end 276 of arm 108 (and/or to pin 109 ), a body 278 that may coil around pin 109 , and a second end 280 that is biased against a back wall 282 of cavity 272 .
  • spring 270 biases controller 18 toward its deployed position.
  • controller 18 may simply push top wall 156 of housing 142 to pivot controller 18 in direction F toward its stored position. During this pivoting about pin 109 , arm 108 remains in a fixed position, and controller 18 moves relative to arm 108 against the biasing force of spring 270 applied to back wall 282 of cavity 272 . As controller 18 approaches the stored position, the user may activate manual release 260 as depicted in FIG. 6B . When the user presses button 264 downwardly, shaft 266 is extended downwardly against the biasing force of spring 268 , which extends.
  • Shaft 266 engages second engagement surface 254 of body 252 , causing counter-clockwise rotation of body 252 about pin 194 against the biasing force of spring arm 200 .
  • This counter-clockwise rotation causes tab 202 to retract through opening 204 in side wall 206 of recess 34 .
  • button 264 of manual release 260 may be released.
  • shaft 266 is moved back to its retracted position as spring 268 retracts to its unextended state, and spring arm 200 causes body 252 to rotate in a clockwise direction about pin 194 .
  • This clockwise rotation causes tab 202 to move back through opening 204 and into notch 205 of controller 18 , thereby retaining controller 18 in its stored position.
  • end wall 152 of controller housing 142 may be formed to include an inclined cam surface 290 (as indicated in dotted lines in FIG. 6B ).
  • cam surface 290 of end wall 152 engages tab 202 , and urges tab 202 into opening 204 , thereby causing counter-clockwise rotation of body 252 about pin 194 against the biasing force of spring arm 200 .
  • the user may re-deploy controller 18 by actuating manual release 260 . More specifically, the user may press button 264 downwardly, thereby causing shaft 266 to engage second engagement surface 254 in the manner described above. Additional downward movement of button 264 causes counter-clockwise rotation of body 252 about pin 194 against the biasing force of spring arm 200 . This also causes tab 202 to retract from notch 205 . When tab 202 is retracted from notch 205 , spring 270 is free to return to its initial position (as shown in FIG. 6A ), thereby moving controller 18 back to its deployed position.
  • latch 250 and release mechanism 174 as a result of movement of siderail 12 still occur in the embodiments of FIGS. 6 A-B. More specifically, if controller 18 is manually placed in its stored position while siderail 12 is in its raised position, and siderail 12 is then moved to its lowered position, controller 18 will remain substantially in its stored position. Release mechanism 174 may cause temporary movement of tab 202 of latch 250 out of notch 205 as cam surface 214 is moved under actuator body 212 , but, as shown in FIG. 5D , controller 18 is substantially in its stored position when such action occurs. Also, as shown in FIG. 5E , tab 202 will return to notch 205 when siderail 12 reaches its lowered position.
  • FIG. 7 shows yet another embodiment of a control panel.
  • Control panel 300 of FIG. 7 is substantially similar to control panel 10 of FIG. 1 , except that linkage mechanism 16 is replaced by an electronic drive mechanism 302 .
  • Common components between the two embodiments have retained the same reference designations.
  • Electronic drive mechanism 302 generally includes a sensor 303 and a motor assembly 304 .
  • Sensor 303 is mounted, for example, to flange 68 of end portion 64 , and is configured to detect movement of arm 52 as arm 52 pivots about rod 78 in the manner described above.
  • Sensor 303 may use any of a variety of different conventional sensor technologies, including magnetic, optic, capacitive, resistive, or other suitable technologies.
  • arm 52 may also include a component for detection by sensor 303 . Such a component would be coupled to arm 52 in a suitable location such that when arm 52 pivots past one or more particular angular positions relative to rod 78 , sensor 303 detects the component coupled to arm 52 .
  • sensor 303 may be mounted in any of a variety of locations to sense the position of components other than arm 52 , so long as sensor 303 is able to detect when siderail 12 is in one or more desired positions.
  • Motor assembly 304 includes a motor 306 that may be mounted to shell 36 of siderail 12 , and a shaft 308 coupled to motor 306 .
  • Motor 306 may be any of a variety of conventional motor types.
  • Motor 306 and shaft 308 are configured such that when motor 306 is activated in the manner described below, motor 306 causes shaft 308 to move either along or about a longitudinal axis of shaft 308 .
  • the free end of shaft 308 is coupled to an arm 310 , which is coupled to housing 142 of controller 18 .
  • Arm 310 may be substantially identical to the embodiments of arm 108 described above, except for its connection to shaft 308 , as is further described below.
  • motor 306 is connected to sensor 303 by conductors 312 . It should be understood, however, that conductors 312 may be optional if sensor 303 and motor 306 are configured such that sensor 303 can wirelessly communicate a signal to motor 306 when arm 52 moves past one or more particular positions.
  • Electronic drive mechanism 302 may (or may not) use the same power source (not shown) as controller 18 .
  • arm 52 pivots about rod 78 in the manner described above.
  • sensor 303 detects arm 52 and provides a signal to motor 306 .
  • Motor 306 is thus activated, and begins rotating shaft 308 about its longitudinal axis, or extending shaft 308 outwardly from motor 306 along its longitudinal axis, depending upon the configuration of motor assembly 304 . If shaft 308 is configured to rotate, then the connection between shaft 308 and arm 310 is configured to convert the rotation of shaft 308 into linear movement of the end of arm 310 to the left as viewed in FIG. 7 .
  • shaft 308 is configured to extend outwardly from motor 306 along its longitudinal axis (i.e., to the left as viewed in FIG. 7 )
  • the connection between shaft 308 and arm 310 is configured such that the end of arm 310 also moves to the left. In either case, the leftward movement of the end of arm 310 causes controller 18 to pivot toward the stored position in the manner described above.
  • the first position of arm 52 at which motor 306 is activated is a sufficiently upward position to permit motor assembly 304 to drive controller 18 into the stored position before controller 18 would interfere with structure such as deck 162 (FIGS. 2 A-B) during further movement of siderail 12 toward the lowered position. It should also be understood that the speed at which motor assembly 304 drives controller 18 into the stored position also influences the desired location of the first position of arm 52 . In other words, if motor assembly 304 drives controller 18 relatively slowly, then the first position of arm 52 (i.e., the position at which movement of arm 52 causes actuation of motor 306 ) should be relatively close to the position shown in FIG. 7 .
  • motor assembly 304 drives controller 18 relatively quickly, then the first position of arm 52 may be closer to, for example, the intermediate position shown in FIG. 3B .
  • a variety of conventional techniques may be employed to disable or deactivate motor 306 when controller 18 reaches the stored position.
  • another sensor may be mounted at an appropriate location within recess 34 to detect movement of controller 18 into the stored position, and send a signal to motor 306 to deactivate motor 306 .
  • motor 306 may be configured to sense resistance to movement of shaft 308 (indicating that controller 18 has engaged lower wall 222 of recess 34 ), and automatically deactivate.
  • Other suitable techniques may also be employed.
  • the location of the second position of arm 52 and the speed of motor assembly 304 are such that motor assembly 304 drives controller 18 toward the deployed position only after siderail 12 has been moved sufficiently upwardly that interference between controller 18 and other structure, such as deck 162 , is avoided.
  • Deactivation of motor 306 after controller 18 reaches the deployed position may be accomplished in the manner described above.
  • the first and second positions of arm 52 may be the same position.
  • the first and second positions may correspond to the position of arm 52 when siderail 12 is in the raised position.
  • sensor 303 may activate motor 306 to move controller 18 to the stored position.
  • sensor 303 may activate motor 306 to move controller 18 to the deployed position.
  • the first and second positions of arm 52 may alternatively be separate positions.
  • arm 310 may be configured to attach to housing 142 in the manner described with reference to FIGS. 6 A-B, thereby permitting manual movement of controller 18 into and out of the stored position when siderail 12 is in the raised position.

Abstract

A movable control panel for a patient support is provided. The patient support includes a support structure which is movable between a raised position and a lowered position relative to a patient support. A controller is coupled to the support structure for movement between a deployed position and a stored position. A mechanism for coupling the controller to the support structure is also provided. The controller includes control switches that are operable to adjust a position of the patient support. The coupling mechanism is operable to move the controller between the deployed position and the stored position in response to movement of the support structure between the raised position and the lowered position, respectively.

Description

    RELATED APPLICATIONS
  • This application claims the benefit of U.S. Provisional Patent Application Ser. No. 60/538,341, filed Jan. 22, 2004, which is incorporated herein by this reference.
  • FIELD OF THE INVENTION
  • The present device generally relates to a control for a patient support (such as a hospital bed), and more particularly to a controller connected to the patient support such that movement of a support structure of the patient support (for example, a siderail) between a raised position and a lowered position relative to the patient support causes movement of the controller between a deployed position and a stored position, respectively.
  • BACKGROUND AND SUMMARY
  • It is known to provide a controller for a patient support, such as a hospital bed, to enable a user to perform a variety of functions including adjusting the bed configuration by, for example, raising or lowering the bed, tilting the bed, or raising, lowering, and/or tilting a portion of the bed relative to another portion of the bed. Conventional controllers are either built into the siderail of the bed, or are provided as pendants that may be stored in the siderail and removed from the siderail for use. Built in controllers generally provide an input surface having individual control switches for the various adjustment functions. The input surface is typically planar with a side surface of the siderail, facing the patient in the bed. This is a very poor ergonomic position. The severe angle between the patient and the controller makes the control switches on the input surface very difficult to see. Also, such controllers are very difficult to use since the patient must either reach across his or her body to access a controller built into one siderail, or bend his or her arm and wrist in an awkward angle to access a controller built into the other siderail.
  • Pendant controllers also have many disadvantages. While pendant controllers may be handheld, avoiding some of the ergonomic problems of built in controllers, pendant controllers may be stolen, lost, misplaced, dropped to the floor or otherwise rendered difficult or impossible to access by a patient in the bed. Moreover, pendant controllers may be damaged when dropped. Even pendant controllers that are tethered to the bed by a tether or an electrical cord may be located outside of an area that is conveniently accessible by the patient. For example, a tethered pendant controller may be located within the bed coverings or over the side of the bed, dangling from the tether. Indeed, tethered pendant controllers are further disadvantageous in that they present a choking hazard. Moreover, tethered pendant controllers are relatively difficult to clean, thereby presenting other heath hazards.
  • In one embodiment of the device described herein, a controller for a bed is connected to a siderail of the bed so that movement of the siderail to a raised position causes movement of the controller to a deployed position which is ergonomically accessible by the patient. Additionally, movement of the siderail to a lowered position causes movement of the controller to a stored position.
  • These and other features of the device will become apparent and be further understood upon reading the detailed description provided below with reference to the following drawings.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a partially fragmented, perspective view of one embodiment of a controller with a siderail in the raised position.
  • FIG. 2A is a partially fragmented, side elevation view of the embodiment of FIG. 1 with the siderail in the lowered position.
  • FIG. 2B is a partially fragmented, side elevation view of the embodiment of FIG. 1 with the siderail in the raised position.
  • FIGS. 3A-C are partially fragmented, side elevation views of certain components of the embodiment of FIG. 1, showing the siderail in the raised, intermediate, and lowered positions, respectively.
  • FIGS. 4A-C are partially fragmented, front elevation views corresponding to FIGS. 3A-C, respectively.
  • FIGS. 5A-E are partially fragmented, front elevation views of another embodiment of a controller with a siderail, showing the interaction between various components as the siderail is moved between the raised position and the lowered position.
  • FIG. 6A is a partially fragmented, front elevation view of another embodiment of a controller with a siderail, showing the siderail in the raised position and the controller in the deployed position.
  • FIG. 6B is a partially fragmented, front elevation view of the embodiment of FIG. 6A with the controller approaching the stored position.
  • FIG. 7 is a partially fragmented, perspective view of another embodiment of a controller with a siderail in the raised position.
  • DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
  • While the present device is susceptible to various modifications and alternative forms, exemplary embodiments thereof have been shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that there is no intent to limit the device to the particular forms disclosed, but on the contrary, the intention is to address all modifications, equivalents, and alternatives falling within the spirit and scope of this disclosure as defined by the appended claims.
  • Referring now to FIG. 1, an embodiment of a control panel of the present invention, generally referred to by the numeral 10, includes a controller 18 coupled to a support structure of a patient support (not shown) by a linkage mechanism 16. In one application, the support structure is a siderail 12, which in turn is coupled to a hospital bed (not shown) by a linkage assembly 14. The siderail is generally coupled to the head end of the bed, so as to be adjacent to the patient's head, upper body, or torso, but may also be coupled to the foot end or other portion of the bed. Other applications, however, are within the scope of this disclosure. For example, controller 18 may be coupled to an overbed table or a table or other structure positioned adjacent to a bed, or to a handle or an armrest of a wheel chair.
  • The construction of hospital bed siderails is known. See, for example, U.S. Pat. Nos. 6,363,552, 6,640,360, and 6,622,323, which are owned by the assignee of the present application, incorporated herein by this reference. Siderail 12 may be formed in a conventional shape, and out of conventional materials. Siderail 12 includes a head end 20, positioned adjacent a head or upper torso of a patient when siderail 12 is connected to a hospital bed, a foot end 22, positioned nearer to the feet of the patient than head end 20, a top side 24, a bottom side 26, a mattress side 28 which faces a mattress (not shown) of the bed, and a caregiver side 30 which faces away from the mattress. Siderail 12 may define an opening 32 as shown in FIG. 1 and found in conventional siderails. Adjacent foot end 22, siderail 12 may define a recess 34 shaped to receive controller 18, as will be described in greater detail below. Siderail 12 may be formed such that it has an outer shell 36 that defines an interior space 38. As such, siderail 12 may include an inner wall 40 and an outer wall 42.
  • Linkage assembly 14 may be similar to the linkage assembly described in U.S. patent application publication number U.S. 2002/0066142 (“the '142 publication), owned by the assignee of the present application, the entire disclosure of which is incorporated herein by this reference. As shown in FIGS. 1 and 2A-B, such a linkage assembly 14 includes an upper link 50 that may be connected to outer wall 42 of siderail 12, a pair of siderail articulation arms 52, 54 that extend between upper link 50 and a bed frame 56, such as the intermediate frame of a hospital bed. Linkage assembly 14 further includes a center arm 58 that extends between frame 56 and a bracket 60 connected to outer wall 42. Bracket 60 includes a pair of flanges 61, 63 that extend substantially perpendicularly outward from outer wall 42. Upper link 50 may include a central portion 62 and a pair of end portions 64, 66. End portion 64 includes a pair of flanges 68, 70 that extend substantially perpendicularly outward from outer wall 42. Similarly, end portion 66 includes a pair of flanges 72, 74 that extend substantially perpendicularly outward from outer wall 42.
  • Arm 52 of linkage assembly 14 includes a first end 76 having an opening (not shown) sized to receive a rod 78. Rod 78 extends through first end 76 and between flanges 68, 70. Thus, arm 52 can pivot about rod 78 relative to flanges 68, 70. Arm 52 further includes a second end 80 having an opening 82. A second rod 84 (FIGS. 2A-B) extends through opening 82 to permit pivotal movement of second end 80 relative to frame 56. Arm 54 is substantially identical to arm 52. Therefore, the components of arm 54 shown in the figures use the same reference designations as the components of arm 52, but increased by 10. Arm 52 also includes a projection 90, which may be part of linkage mechanism 16 as is further described below.
  • Center arm 58 similarly includes a first end 92 having an opening (not shown) sized to receive a rod 94, and a second end 96 having an opening (not shown) sized to receive a rod 98. Rod 94 extends through first end 92 and between flanges 61, 63 so that first end 92 is pivotable about rod 92 relative to bracket 60. Rod 98 likewise extends through second end 96 of center arm 58 and is coupled to frame 56 to permit pivotal movement of second end 96 relative to frame 56.
  • In the embodiment of FIG. 1, linkage mechanism 16 generally includes projection 90 connected to first end 76 of arm 52, a first link 100, a second link 102, a third link 104, a fourth link 106, and an arm 108 connected to controller 18 as is further described below. Projection 90 is rigidly connected to first end 76 of arm 52, and extends therefrom in substantially parallel relationship to outer wall 42 when siderail 12 is in the raised position as shown in FIG. 1. Projection 90 includes an opening 110 for receiving a portion of first link 100. First link 100 includes a first end 112 that extends through opening 110 of projection 90, and provides a retainer portion 114 that curves relative to a longitudinal axis of first link 100 to retain first end 112 in opening 110 during actuation of linkage mechanism 16 as is further described below. First link 100 further includes a second end 116 that extends through an opening 118 of second link 102. Second end 116 similarly provides a retainer portion 120 that curves relative to the longitudinal axis of first link 100 to retain second end 116 in opening 118 during actuation of linkage mechanism 16. It should be understood, however, that either or both of retainer portions 114, 120, as well as openings 110, 118, may be replaced with any of a variety of different types of conventional movable connections.
  • As shown in FIG. 1, second link 102 includes a first end 122 that defines opening 118, and a second end 124. In one embodiment, second end 124 is rigidly connected to third link 104 such that together, second link 102 and third link 104 form a unitary “V-link” configuration. In the embodiment shown, second end 124 of second link 102 is rigidly connected to a first end 126 of third link 104. Third link 104 also includes a second end 128 that defines an opening 130. Additionally, a pin 132 mounted to outer wall 42 extends through openings (not shown) or into a bore (not shown) located at the intersection of second end 124 of second link 102 and first end 126 of third link 104 so that the “V-link” configuration pivots about pin 132.
  • Fourth link 106, in one embodiment, includes a first end 134 having a retainer portion 136 that extends through opening 130 to retain first end 134 in opening 130 during actuation of linkage mechanism 16, a body 137, and a second end 138 having a retainer portion 140 which is coupled to arm 108 to retain second end 138 in engagement with arm 108 during actuation of linkage mechanism 16.
  • Controller 18 generally includes a housing 142 in which are housed conventional electronics (not shown) for performing various functions. The electronics may be routed in any suitable manner to various actuation mechanisms (not shown) or other devices for carrying out the various functions. Housing 142 also defines an input surface 144 including a plurality of control switches 146 that permit the patient (or other person) to select one or several of the various functions. It should be understood that one of ordinary skill in the art could readily configure control switches 146 to control any type of function, including bed adjustment functions, television and radio controls, nurse call functions, room environmental controls, etc. Housing 142 also includes a pair of side walls 148, 150, a pair of end walls 152, 154, and a top wall 156 opposite input surface 144. As indicated above, arm 108 is connected to housing 142 of controller 18 such that movement of fourth link 106 results in movement of controller 18 about a pin 109 into and out of recess 34 as is described in detail below. It should be understood, however, that controller 18 need not move into and out of a recess 34, but instead may simply move into and out of a stored position, which may or may not be in direct contact with siderail 12.
  • FIGS. 2A-B show the basic movement of control panel 10 of FIG. 1. As shown in FIG. 2A, when siderail 12 is in its lowered position, arms 52, 54 (only arm 52 is shown), and center arm 58 extend downwardly from frame 56. In the lowered position, top surface 24 may be supported below an upper surface 160 of a deck 162 for supporting a mattress (not shown). In this manner, siderail 12 is positioned out of the way of caregivers and other personnel who may need unobstructed access to the mattress or a patient supported by deck 162. As shown in FIG. 2A, when siderail 12 is in the lowered position, controller 18 is in its stored position.
  • When siderail 12 is moved to the raised position as shown in FIG. 2B, linkage assembly 14 pivots outwardly and upwardly relative to frame 56, and may maintain siderail 12 in a substantially perpendicular orientation, as described in detail in the '142 Publication referenced above. This movement of linkage assembly 14 causes actuation of linkage mechanism 16 (as described in greater detail below), which in turn causes controller 18 to move from its stored position to its deployed or use position as shown in FIG. 2B. As is also described in greater detail below, controller 18 remains in its stored position during a portion of the travel of siderail 12 between the lowered position the raised position. In other words, when siderail 12 is being moved toward the raised position, controller 18 does not begin to move out of the stored position until siderail 12 has moved to an intermediate position (i.e., between the lowered position and the raised position) that would permit deployment of controller 18 without risking interference of controller 18 with another structure, such as deck 162. Similarly, when siderail 12 is moved from the raised position to the lowered position, controller 18 moves from its deployed position to its stored position before the movement of siderail 12 places controller 18 in a position of likely interference with another structure, such as deck 162. Again referring to FIG. 2B, when siderail 12 is in the raised position, top side 24 of siderail 12 is positioned well above upper surface 160, and controller 18 extends from siderail 12 in the deployed position. When in the deployed position, controller 18 is supported at an angle from siderail 12 and at an angle and height relative to deck 162 such that a person in the bed can easily reach control switches 146 to actuate selected functions.
  • Referring now to FIGS. 3A-C and FIGS. 4A-C, the manner in which actuation of linkage assembly 14 to move siderail 12 between the lowered and raised positions causes actuation of linkage mechanism 16 will be described in detail. FIGS. 3A and 4A depict siderail 12 in the raised position. As shown, arm 52 is positioned such that projection 90 extends substantially upwardly, thereby positioning first end 112 of first link 100 at a height A relative to pin 132, which is at height X, and relative to rod 78, which is at height Y. Of course, arm 54 and center arm 58 also support siderail 12, but neither is shown in these figures. As will become apparent from the following description, the distance between pin 132 (height X) and rod 78 (height Y) remains substantially fixed as siderail 12 is moved between the raised position and the lowered position. When siderail 12 is in the raised position shown, second end 116 of first link 100 and first end 122 of second link 102 are in a position above height X.
  • As siderail 12 is moved downwardly as indicated by arrow D in FIGS. 3B and 4B, first end 76 of arm 52 pivots about rod 78 in the direction of arrow E (FIG. 3B). As first end 76 pivots about rod 78, projection 90 also pivots about rod 78, pulling first link 100 downwardly relative to pin 132. When in the intermediate position shown in FIGS. 3B and 4B, first end 112 of first link 100 is at height B. As can be seen by comparing the figures, height B is closer to height Y than height A is to height Y. As is also indicated in the figures, first end 122 of second link 102 is positioned substantially at height X when siderail 12 is in the intermediate position as a result of projection 90 moving from height A to height B. Since second end 124 of second link 102 is rigidly connected to first end 126 of third link 104 at pin 132, movement of first end 122 of second link 102 downwardly causes rotation of second link 102 and third link 104 about pin 132 in a counter-clockwise direction. Consequently, second end 128 of third link 104 moves to the left as is best depicted in FIG. 4B.
  • As siderail 12 is moved farther downwardly in the direction of arrow D to the lowered position of FIGS. 3C and 4C, first end 76 of arm 52 pivots farther about rod 78 in the direction of arrow E. When siderail 12 is in the lowered position, projection 90 is positioned below height Y, at height C. This additional downward movement of projection 90 pulls first link 100 farther downwardly, such that second end 116 of first link 100 is below height X (i.e., below pin 132). Consequently, second link 102 and third link 104 pivot farther in a counter-clockwise direction about pin 132. This causes second end 128 of third link 104 to move farther to the left (as viewed in the figures), thereby causing controller 18 to move from its deployed position to its stored position as is described in greater detail below.
  • In one embodiment, movement of second end 128 of third link 104 causes controller 18 to move from its deployed position to its stored position as a result of leftward movement of fourth link 106 (depicted in FIG. 1). In this embodiment, leftward movement of fourth link 106 causes second end 138 of fourth link 106 to urge arm 108 toward the left. This, in turn, causes arm 108 and controller 18 to pivot in a clockwise direction about pin 109 (FIG. 5A). As such, controller 18 moves along the arc F (FIG. 1) into recess 34. When siderail 12 is moved from its lowered position to its raised position, the process and movements described above are reversed.
  • In another embodiment, depicted in FIGS. 5A-E, fourth link 106 is replaced with a different embodiment fourth link 170. Other features, such as a latch 172 and a release mechanism 174 are also shown. Fourth link 170 includes a body 176 having a first end 178 and a second end 180. Body 176 further defines a first slot 182 and a second slot 184. Slot 182 includes a first end 182A and a second end 182B, and is configured to receive a first end 185 of a drive link 186 of release mechanism 174 as is further described below. Similarly, slot 184 includes a first end 184A and a second end 184B, and is configured to receive a pin 188, which is connected to a first end 190 of arm 108. First end 178 of fourth link 170 is connected to end 128 of third link 104 by a pin 191.
  • Latch 172 generally includes a body 192 which is pivotally connected by a pin 194 to outer shell 36 of siderail 12 adjacent mattress side 28. Body 192 includes a lever arm 196 having an engagement surface 198, a spring arm 200, and a tab 202. When in a latched position as shown, for example, in FIG. 5A, tab 202 extends through an opening 204 formed in a side wall 206 of recess 34, and is configured to engage a notch 205 formed in end wall 152 of controller 18 as is further described below. Additionally, spring arm 200 is positioned adjacent an engagement surface 208 on an interior side of shell 36.
  • Release mechanism 174 generally includes drive link 186 (mentioned above), a release body 210, and an actuator 212 positioned below engagement surface 198 of lever arm 196. Release body 210 includes a cam surface 214 configured to engage actuator 212 as described below, and a finger 216. Finger 216 is sized to fit within a channel 218 formed by a support 220 connected to or integral with a lower wall 222 of recess 34. A second end 187 of drive link 186 is connected to release body 210 as shown in the figures.
  • Actuator 212 includes a body 226 having a central slot 228, and a bracket 230 connected to an interior surface of outer shell 36. Slot 228 of body 226 is formed to receive a pin 232 extending from bracket 230. Pin 232 is configured, on the other hand, to retain body 226 on bracket 230, but to permit upward and downward movement of body 226. Bracket 230 includes a pair of flanges 234, 236 which extend substantially perpendicularly away from the interior surface of shell 36 to guide body 226 through its upward movement into engagement with engagement surface 198 of lever arm 196 and its downward movement out of engagement with engagement surface 198, as is further described below. Of course, various other configurations are possible for actuator 212. For example, body 226 may include a pin or pins that move within a slot or slots formed in bracket 230. Any configuration is suitable so long as body 226 is movable (as a result of contact with release body 210) into and out of engagement with engagement surface 198 of latch body 192.
  • As shown in FIG. 5A, when siderail 12 is in the raised position, linkage mechanism 16 is in substantially the same position as shown in FIGS. 3A and 4A. In this position, first end 190 of arm 108 is adjacent end 184B of slot 184. Arm 108 extends through a slot 207 formed in lower wall 222 and side wall 206 of recess 34. Additionally, first end 185 of drive link 186 is adjacent end 182B of slot 182. As will become apparent from the following description, the relative position of first end 190 of arm 108 to slot 184, and the relative position of first end 185 of drive link 186 to slot 182 changes with movement of linkage mechanism 16 as siderail 12 is moved between the lowered position to the raised position. As shown in the figure, controller 18 is in the deployed position, wherein control switches 146 (FIG. 1) are relatively easily accessible by a user. When in the deployed position, input surface 144 of controller 18 forms an angle G relative to lower wall 222 of recess 34. In one embodiment, angle G is approximately 115 degrees.
  • Referring now to FIG. 5B, siderail 12 is shown in a first intermediate position between the raised position of FIG. 5A and the lowered position of FIG. 5E. In this intermediate position, siderail 12 has just begun to be lowered from the raised position. As siderail 12 is lowered, arm 52 of linkage assembly 14 pivots about rod 78, thereby moving projection 90 downwardly relative to pin 132 (which is at height X), as explained above with reference to FIGS. 3A-C and 4A-C. Consequently, first link 100 moves downwardly, the combination of second link 102 and third link 104 pivot in a counter-clockwise direction about pin 132, and fourth link 170 moves to the left as viewed in the figures. As shown in FIG. 5B, as a result of this leftward movement, first end 190 of arm 108 is now adjacent end 184A of slot 184 and first end 185 of drive link 186 is now in between ends 182A and 182B of slot 182. Controller 18 has not yet moved from its deployed position. Thus, during this first part of downward movement of siderail 12 (and the corresponding movement of linkage mechanism 16), controller 18 may remain deployed.
  • FIG. 5C shows siderail 12 at a second intermediate position between the raised position and the lowered position. As shown, arm 52 (now extending directly out of the page) has pivoted farther about rod 78, thereby moving projection 90 and first link 100 (not shown in FIG. 5C) farther downwardly relative to pin 132. Again, this downward movement causes counter-clockwise rotation of second link 102 and third link 104 about pin 132, and leftward movement of fourth link 170. The additional leftward movement (relative to FIG. 5B) of fourth link 170 causes arm 108 and controller 18 to pivot about pin 109. More specifically, first end 190 of arm 108 engages end 184A of slot 184 and is urged toward the left. Since, in this embodiment, arm 108 is rigidly connected to housing 142 of controller 18, and since housing 142 is pivotally supported on siderail 12 by pin 109, leftward movement of first end 190 of arm 108 causes clockwise rotation of arm 108 and controller 18 about pin 109. As is also shown in FIG. 5C, fourth link 170 has now moved sufficiently to the left that first end 185 of drive link 186 is adjacent end 182A of slot 182.
  • FIG. 5D shows a third intermediate position of siderail 10. As shown, arm 52 of linkage assembly 14 has rotated farther about rod 78, and projection 90 is now positioned below rod 78. Consequently, first link 100 has been pulled farther downwardly, and second link 102 and third link 104 have rotated farther about pin 132 in a counter-clockwise direction. As a result, fourth link 170 is positioned farther to the left (relative to FIG. 5C). This leftward movement of fourth link 170 causes controller 18 to pivot farther about pin 109 as end 184A of slot 184 drives first end 190 of arm 108 farther to the left. As shown, controller 18 is very nearly in its stored position. In this embodiment, the relative positions of end 184A of slot 184 and end 182A of slot 182 ensure that controller 18 will pivot almost all the way into the stored position before latch 172 is actuated. As shown in FIG. 5D, the leftward movement of fourth link 170 from the position of FIG. 5C to the position of FIG. 5D causes end 182A of slot 182 to drive first end 185 of drive link 186 to the left. This, in turn, urges release body 210 to the left such that cam surface 214 moves under and engages actuator body 226. Finger 216 of release body 210 also moves partially into channel 218 defined by support 220. As cam surface 214 moves under and engages actuator body 226, actuator body 226 is urged upwardly. Thus, actuator body 226 travels upwardly within the channel defined by flanges 234, 236 and pin 232 shifts position relative to slot 228.
  • FIG. 5D shows actuator body 226 near the top of its travel within bracket 230, wherein the upper surface of body 226 has engaged engagement surface 198 of lever arm 196 and urged latch 172 to its unlatched position. More specifically, lever arm 196 is urged upwardly against the biasing force of spring arm 200, which is also engaged by engagement surface 208 of shell 36. As lever arm 196 is urged upwardly, body 192 of latch 172 pivots in a counter-clockwise direction about pin 194. This counter-clockwise pivoting causes tab 202 of latch 172 to retract from opening 204 into the interior of siderail 12. Thus, as siderail 12 is moved farther downwardly into its lowered position, and controller 18 pivots farther clockwise into its stored position, tab 202 will be retracted to avoid interference with end wall 152 of controller housing 142.
  • FIG. 5E shows siderail 12 in its lowered position and controller 18 in its stored position. As a result of additional downward movement of siderail 12, arm 52 has pivoted to its fullest extent about pin 78, thereby moving projection 90 to its lowermost position (i.e., height C as shown in FIG. 3C). As such, first link 100 is at its lowest position, and second link 102 and third link 104 are at a position corresponding to their maximum counter-clockwise rotation about pin 132. As shown in the figure, fourth link 170 has also moved farther to the left (relative to its position in FIG. 5D) as a result of the rotation of second link 102 and third link 104. This leftward movement has caused first end 184A of slot 184 to urge first end 190 of arm 108 farther to the left, thereby causing arm 108 and controller 18 to pivot farther clockwise about pin 109 until controller 18 reaches its stored position as shown in FIG. 5E. At approximately the same time as controller 18 reaches its stored position, the leftward movement of fourth link 170 causes first end 182A of slot 182 to urge drive link 186 (and release body 210) to the left so that cam surface 214 of release body 210 moves out of engagement with actuator body 226. When release body 210 moves out of engagement with actuator body 226 into the position shown in FIG. 5E, actuator body 226 moves downwardly under the force of gravity and the biasing force of spring arm 200 of latch 172. This permits movement of spring arm 200 into its non-compressed position, which causes latch body 192 to rotate in a clockwise direction about pin 194. Consequently, tab 202 of latch 172 moves back through opening 204 of side wall 206, and into notch 205 of controller 18. The engagement of tab 202 and notch 205 retains or locks controller 18 in its stored position.
  • It should be understood from the foregoing that one of ordinary skill in the art could readily adjust the timing of the various movements of the components of control panel 10 by adjusting the relative positions of certain components and/or the size and/or shape of certain components. For example, the delay before controller 18 begins to move toward its stored position as siderail 12 is moved out of its raised position can be changed by adjusting, for example, the length and/or position of slot 184. The timing of actuation of latch 172 may be changed by adjusting, for example, the length and/or position of slot 182. The relative timing of movement of controller 18 into its stored position and movement of latch 172 from its latched to its unlatched position may be changed by adjusting, for example, the relative locations of end 184A of slot 184 and end 182A of slot 182. Any of a variety of other adjustments are within the scope of this disclosure and the ability of a skilled artisan.
  • The interaction among the components of control panel 10 of FIGS. 5A-E during movement of siderail 12 from the lowered position to the raised position is substantially the reverse of the interactions described above. Accordingly, a more abbreviated description will follow. As siderail 12 is moved upwardly out of the lowered position of FIG. 5E, the movements of arm 52, first link 100, second link 102, and third link 104 cause fourth link 170 to move to the right as viewed in the figures. The first portion of this rightward movement (i.e., during the movement of siderail 10 out of potential interference with, for example, deck 162 as shown in FIG. 2A) does not result in movement of either latch 172 or controller 18 since drive link 186 and arm 108 move freely within slot 182 and slot 184, respectively.
  • Eventually, fourth link 170 moves sufficiently to the right that first end 185 of drive link 186 engages end 182B of slot 182, and release body 210 (specifically, cam surface 214) is pulled under actuator 212. This causes actuator body 226 to move upwardly into engagement with engagement surface 198 of latch 172. Latch 172 then rotates counter-clockwise against the biasing force of spring arm 200, retracting tab 202 from notch 205 of controller 18.
  • At this point in the upward movement of siderail 12 (a point roughly corresponding to FIG. 5D), fourth link 170 has moved sufficiently to the right that first end 190 of arm 108 engages end 184B of slot 184 and is pulled to the right, causing arm 108 and controller 18 to pivot in a counter-clockwise direction about pin 109.
  • When release body 210 is pulled fully to the right of actuator 212, actuator body 226 moves down and latch 172 pivots in a clockwise direction to its latched position as shown in FIG. 5C. Additional upward movement of siderail 12 (and corresponding rightward movement of fourth link 170) results in movement of release body 210 farther to the right of actuator 212 and farther counter-clockwise pivoting of controller 18 about pin 109 until it reaches its deployed position shown in FIG. 5A. As should be apparent from the foregoing, controller 18 reaches its deployed position at approximately the same time that siderail 12 reaches its raised position.
  • FIGS. 6A-B depict yet another embodiment of a control panel 10. In this embodiment, siderail 12 is configured to permit movement of controller 18 between the stored and deployed positions while siderail 12 remains in the raised position. In some instances, it may be desirable to permit manual movement of controller 18 to its stored position while siderail 12 is raised to, for example, permit easier access to a patient in a bed, or to permit deployment of only one of two controller 18 in a bed equipped with two control panels 10. Of course, if controller 18 is manually moved to its stored position while siderail 12 is in its raised position, it may also be desirable to permit manual movement of controller 18 out of its stored position, and back into its deployed position while siderail 12 remains in its raised position. The embodiment of FIGS. 6A-B provides these features.
  • The embodiment of FIGS. 6A-B is substantially similar to the embodiment of FIGS. 5A-E, except that latch 172 is reconfigured as latch 250, a manual release 260 is added, and the connection between arm 108 and controller 18 is reconfigured. Accordingly, common components will not be described, and will retain their original reference designations. Latch 250 is substantially the same as latch 172, except that unlike body 192, body 252 is shaped to include a second engagement surface 254 on an upper portion of body 252 as viewed in the figures. It should be noted that second engagement surface 254, unlike engagement surface 198, is on the left side of pin 194 in this embodiment.
  • Manual release 260 includes a housing 262 mounted within an opening (not shown) in shell 36 of siderail 12, a button 264 movably mounted within housing 262, a shaft 266 connected to or integral with button 264, and a spring 268 connected between housing 262 and shaft 266. When manual release 260 is in its retracted position as shown in FIG. 6A, spring 268, which is connected at one end (not shown) to housing 262 and at the other end (not shown) to shaft 266, is in a substantially unextended state. Thus, spring 268 may retain shaft 266 just above, or in slight contact with engagement surface 254 of body 252.
  • The connection between arm 108 and controller 18 in the embodiment of FIGS. 6A-B is a movable connection, unlike the rigid connection of the embodiment of FIGS. 5A-E. More specifically, controller 18 is permitted to rotate about pin 109 while arm 108 remains in a fixed position relative to pin 109. To this end, a spring 270 is disposed within a cavity 272 formed in housing 142 of controller 18. Spring 270 includes a first end 274 that is attached to a second end 276 of arm 108 (and/or to pin 109), a body 278 that may coil around pin 109, and a second end 280 that is biased against a back wall 282 of cavity 272. Thus, spring 270 biases controller 18 toward its deployed position.
  • If, when siderail 12 is in its raised position, a user wishes to move controller 18 to its stored position, the user may simply push top wall 156 of housing 142 to pivot controller 18 in direction F toward its stored position. During this pivoting about pin 109, arm 108 remains in a fixed position, and controller 18 moves relative to arm 108 against the biasing force of spring 270 applied to back wall 282 of cavity 272. As controller 18 approaches the stored position, the user may activate manual release 260 as depicted in FIG. 6B. When the user presses button 264 downwardly, shaft 266 is extended downwardly against the biasing force of spring 268, which extends. Shaft 266 engages second engagement surface 254 of body 252, causing counter-clockwise rotation of body 252 about pin 194 against the biasing force of spring arm 200. This counter-clockwise rotation causes tab 202 to retract through opening 204 in side wall 206 of recess 34. When controller 18 is pushed into its stored position, button 264 of manual release 260 may be released. When button 264 is released, shaft 266 is moved back to its retracted position as spring 268 retracts to its unextended state, and spring arm 200 causes body 252 to rotate in a clockwise direction about pin 194. This clockwise rotation causes tab 202 to move back through opening 204 and into notch 205 of controller 18, thereby retaining controller 18 in its stored position.
  • It should be understood that instead of requiring the user to actuate manual release 260 in the manner described above to manually facilitate retention of controller 18 in its stored position, end wall 152 of controller housing 142 may be formed to include an inclined cam surface 290 (as indicated in dotted lines in FIG. 6B). In such an embodiment, as controller 18 approaches its stored position, cam surface 290 of end wall 152 engages tab 202, and urges tab 202 into opening 204, thereby causing counter-clockwise rotation of body 252 about pin 194 against the biasing force of spring arm 200. When controller 18 reaches its stored position in this embodiment, tab 202 aligns with notch 205, and the biasing force of spring arm 200 causes clockwise rotation of body 252 (including tab 202), thereby causing tab 202 to snap into notch 205 and retain controller 18 in the stored position.
  • In either of the two previously described embodiments, the user may re-deploy controller 18 by actuating manual release 260. More specifically, the user may press button 264 downwardly, thereby causing shaft 266 to engage second engagement surface 254 in the manner described above. Additional downward movement of button 264 causes counter-clockwise rotation of body 252 about pin 194 against the biasing force of spring arm 200. This also causes tab 202 to retract from notch 205. When tab 202 is retracted from notch 205, spring 270 is free to return to its initial position (as shown in FIG. 6A), thereby moving controller 18 back to its deployed position.
  • It should also be understood that the latching and unlatching functions of latch 250 and release mechanism 174 as a result of movement of siderail 12 still occur in the embodiments of FIGS. 6A-B. More specifically, if controller 18 is manually placed in its stored position while siderail 12 is in its raised position, and siderail 12 is then moved to its lowered position, controller 18 will remain substantially in its stored position. Release mechanism 174 may cause temporary movement of tab 202 of latch 250 out of notch 205 as cam surface 214 is moved under actuator body 212, but, as shown in FIG. 5D, controller 18 is substantially in its stored position when such action occurs. Also, as shown in FIG. 5E, tab 202 will return to notch 205 when siderail 12 reaches its lowered position.
  • FIG. 7 shows yet another embodiment of a control panel. Control panel 300 of FIG. 7 is substantially similar to control panel 10 of FIG. 1, except that linkage mechanism 16 is replaced by an electronic drive mechanism 302. Common components between the two embodiments have retained the same reference designations.
  • Electronic drive mechanism 302 generally includes a sensor 303 and a motor assembly 304. Sensor 303 is mounted, for example, to flange 68 of end portion 64, and is configured to detect movement of arm 52 as arm 52 pivots about rod 78 in the manner described above. Sensor 303 may use any of a variety of different conventional sensor technologies, including magnetic, optic, capacitive, resistive, or other suitable technologies. It should be understood that arm 52 may also include a component for detection by sensor 303. Such a component would be coupled to arm 52 in a suitable location such that when arm 52 pivots past one or more particular angular positions relative to rod 78, sensor 303 detects the component coupled to arm 52. As will become apparent from the following description, sensor 303 may be mounted in any of a variety of locations to sense the position of components other than arm 52, so long as sensor 303 is able to detect when siderail 12 is in one or more desired positions.
  • Motor assembly 304 includes a motor 306 that may be mounted to shell 36 of siderail 12, and a shaft 308 coupled to motor 306. Motor 306 may be any of a variety of conventional motor types. Motor 306 and shaft 308 are configured such that when motor 306 is activated in the manner described below, motor 306 causes shaft 308 to move either along or about a longitudinal axis of shaft 308. As shown in FIG. 7, the free end of shaft 308 is coupled to an arm 310, which is coupled to housing 142 of controller 18. Arm 310 may be substantially identical to the embodiments of arm 108 described above, except for its connection to shaft 308, as is further described below. Finally, as is also indicated in FIG. 7, motor 306 is connected to sensor 303 by conductors 312. It should be understood, however, that conductors 312 may be optional if sensor 303 and motor 306 are configured such that sensor 303 can wirelessly communicate a signal to motor 306 when arm 52 moves past one or more particular positions. Electronic drive mechanism 302 may (or may not) use the same power source (not shown) as controller 18.
  • In use, when siderail 12 is moved out of the raised position shown in FIG. 7, arm 52 pivots about rod 78 in the manner described above. As arm 52 pivots past a first position, sensor 303 detects arm 52 and provides a signal to motor 306. Motor 306 is thus activated, and begins rotating shaft 308 about its longitudinal axis, or extending shaft 308 outwardly from motor 306 along its longitudinal axis, depending upon the configuration of motor assembly 304. If shaft 308 is configured to rotate, then the connection between shaft 308 and arm 310 is configured to convert the rotation of shaft 308 into linear movement of the end of arm 310 to the left as viewed in FIG. 7. If shaft 308 is configured to extend outwardly from motor 306 along its longitudinal axis (i.e., to the left as viewed in FIG. 7), then the connection between shaft 308 and arm 310 is configured such that the end of arm 310 also moves to the left. In either case, the leftward movement of the end of arm 310 causes controller 18 to pivot toward the stored position in the manner described above.
  • It should be understood that the first position of arm 52 at which motor 306 is activated is a sufficiently upward position to permit motor assembly 304 to drive controller 18 into the stored position before controller 18 would interfere with structure such as deck 162 (FIGS. 2A-B) during further movement of siderail 12 toward the lowered position. It should also be understood that the speed at which motor assembly 304 drives controller 18 into the stored position also influences the desired location of the first position of arm 52. In other words, if motor assembly 304 drives controller 18 relatively slowly, then the first position of arm 52 (i.e., the position at which movement of arm 52 causes actuation of motor 306) should be relatively close to the position shown in FIG. 7. If, on the other hand, motor assembly 304 drives controller 18 relatively quickly, then the first position of arm 52 may be closer to, for example, the intermediate position shown in FIG. 3B. Finally, it should be understood that a variety of conventional techniques may be employed to disable or deactivate motor 306 when controller 18 reaches the stored position. For example, another sensor may be mounted at an appropriate location within recess 34 to detect movement of controller 18 into the stored position, and send a signal to motor 306 to deactivate motor 306. Alternatively, motor 306 may be configured to sense resistance to movement of shaft 308 (indicating that controller 18 has engaged lower wall 222 of recess 34), and automatically deactivate. Other suitable techniques may also be employed.
  • When siderail 12 is in the lowered position such as the position shown in FIG. 3C, arm 52 is positioned substantially downwardly, and controller 18 is in the stored position. When siderail 12 is raised from the lowered position, arm 52 pivots relative to rod 78 in the manner described above. When arm 52 pivots past a second position, such as the intermediate position shown in FIG. 3B, sensor 303 detects arm 52 and sends a signal to motor 306 to activate motor 306. Motor 306 then causes rotation or linear movement of shaft 308 to drive the end of arm 310 to the right (as viewed in the figures). As arm 310 moves to the right, controller 18 pivots toward the deployed position as described above. When siderail 12 reaches the raised position as shown in FIG. 7, controller 18 is in the deployed position.
  • As mentioned above with reference to movement of controller 18 to the stored position, the location of the second position of arm 52 and the speed of motor assembly 304 are such that motor assembly 304 drives controller 18 toward the deployed position only after siderail 12 has been moved sufficiently upwardly that interference between controller 18 and other structure, such as deck 162, is avoided. Deactivation of motor 306 after controller 18 reaches the deployed position may be accomplished in the manner described above.
  • As should be apparent from the foregoing, the first and second positions of arm 52 may be the same position. For example, the first and second positions may correspond to the position of arm 52 when siderail 12 is in the raised position. As such, when arm 52 moves out of this upward position (indicating movement of siderail 12 toward the lowered position), sensor 303 may activate motor 306 to move controller 18 to the stored position. When arm 52 moves into this upward position (indicating that siderail 12 has been moved into the raised position), sensor 303 may activate motor 306 to move controller 18 to the deployed position. Of course, the first and second positions of arm 52 may alternatively be separate positions.
  • As should also be apparent from the foregoing, arm 310 may be configured to attach to housing 142 in the manner described with reference to FIGS. 6A-B, thereby permitting manual movement of controller 18 into and out of the stored position when siderail 12 is in the raised position.
  • The foregoing description of the device is illustrative only, and is not intended to limit the scope of protection of the device to the precise terms set forth. Although the device has been described in detail with reference to certain illustrative embodiments, variations and modifications exist within the scope and spirit of the device as described and defined in the following claims.

Claims (34)

1. A controller for adjusting a patient support having a siderail, including:
a housing including a plurality of control switches configured to be actuated by a user to cause adjustment of the patient support; and
a linkage mechanism coupled to the housing, the linkage mechanism being operable such that movement of the siderail between a raised position and a lowered position relative to the patient support is translated through the linkage mechanism into movement of the housing between a deployed position spaced apart from the siderail and a stored position substantially within the siderail, respectively.
2. The controller of claim 1, wherein the housing is pivotably mounted to a patient side of the siderail.
3. The controller of claim 1, wherein the housing is disposed within a recess formed in the siderail when the housing is in the stored position.
4. The controller of claim 1, wherein the linkage mechanism includes a first link and a first end of the first link is coupled to an arm extending between a frame of the bed and the siderail, the arm being movable to support the siderail during movement of the siderail between the raised position and the lowered position.
5. The controller of claim 4, wherein the linkage mechanism further includes a second link coupled to the housing, the second link including a first end and a second end, a second end of the first link being coupled to the first end of the second link, and the second end of the second link being coupled to the housing.
6. The controller of claim 5, wherein the linkage mechanism further includes a third link having a first end and a second end and a fourth link having a first end and a second end, the first end of the third link being coupled to the second end of the first link, the second end of the third link being coupled to the first end of the fourth link, and the second end of the fourth link being coupled to the first end of the second link.
7. The controller of claim 6, wherein the second end of the third link is rigidly coupled to the first end of the fourth link at a first pin which is mounted to the siderail, the third link and the fourth link being pivotal about the first pin.
8. The controller of claim 7, wherein the arm is coupled to a rod which is coupled to the siderail, such that the arm pivots about the rod during movement of the siderail between the raised position and the lowered position.
9. The controller of claim 8, wherein pivotal movement of the arm about the rod in one direction is translated through the first link, the second link, the third link, and the fourth link, into pivotal movement of the housing about a second pin toward the stored position.
10. The controller of claim 9, wherein pivotal movement of the arm about the rod in a second direction is translated through the first link, the second link, the third link, and the fourth link, into pivotal movement of the housing about the second pin toward the deployed position.
11. The controller of claim 1, wherein the linkage mechanism further includes a second link coupled to the housing and an arm having a first end coupled to the housing at a first pin and a second end, the second link including a first slot having a first end and a second end, the second end of the arm being movable within the first slot.
12. The controller of claim 11, wherein the housing is pivotally coupled to the siderail at the first pin for movement between the stored position and the deployed position.
13. The controller of claim 12, wherein movement of the siderail toward the lowered position is translated through the first link into movement of the second link in a first direction such that the first end of the first slot engages the second end of the arm, and urges the second end of the arm in the first direction, thereby causing the housing to pivot about the first pin toward the stored position.
14. The controller of claim 13, wherein movement of the siderail toward the raised position is translated through the first link into movement of the second link in a second direction such that the second end of the first slot engages the second end of the arm, and urges the second end of the arm in the second direction, thereby causing the housing to pivot about the first pin toward the deployed position.
15. The controller of claim 11, further including a spring coupled between the arm and the housing to bias the housing toward the deployed position, the housing being movable relative to the arm against the biasing force of the spring into the stored position.
16. The controller of claim 11, further including a latch having a tab configured to retain the housing in the stored position and a release mechanism including a release body and an actuator configured to move the latch between a latched position, wherein the latch retains the housing in the stored position, and an unlatch position, wherein the latch does not retain the housing in the stored position.
17. The controller of claim 16, wherein the second link further includes a second slot having a first end and a second end, the second slot being configured to movably receive a first end of a drive link coupled to the release body.
18. The controller of claim 17, wherein movement of the siderail toward the second position is translated through the first link into movement of the second link in a first direction such that the first end of the second slot engages the first end of the drive link, and urges the first end of the drive link in the first direction, thereby causing the release body to engage the actuator which, in turn, moves the latch into the unlatched position.
19. The controller of claim 16, wherein the latch is pivotally mounted to the siderail at a second pin, and includes a spring arm configured to bias the latch toward the latched position, and a lever arm having an engagement surface.
20. The controller of claim 19, wherein the actuator is positioned to engage the engagement surface and thereby cause rotation of the latch about the second pin against the biasing force of the spring arm.
21. The controller of claim 16, wherein the actuator includes a bracket configured to be mounted to the siderail, and a body movably coupled to the bracket.
22. The controller of claim 21, wherein the bracket includes a second pin and the actuator body includes a slot configured to receive the second pin such that as the actuator moves the latch between the latched position and the unlatched position, the slot moves relative to the second pin.
23. The controller of claim 16, further including a manual release configured to permit manual movement of the latch from the latched position toward the unlatched position, the manual release including a housing mounted to the siderail, a button movably mounted to the housing, a shaft mounted to the housing for movement toward and away from the latch, and a spring coupled to the shaft to bias the shaft away from the latch.
24. The controller of claim 23, wherein movement of the button in a first direction causes movement of the shaft toward the latch against the biasing force of the spring, such that the shaft engages and moves the latch from the latched position toward the unlatched position.
25. A control panel, including:
a siderail mountable to a bed, the siderail being movable between a raised position and a lowered position;
a controller coupled to the siderail for movement between a deployed position away from the siderail and a stored position near the siderail, the controller including an input surface having a control switch configured to be actuated by a patient to adjust a position of the bed, the control switch being accessible by the patient when the controller is in the deployed position and inaccessible by the patient when the controller is in the stored position; and
an arm coupled between the siderail and the controller such that movement of the siderail between the raised position and the lowered position causes movement of the controller between the deployed position and the stored position, respectively.
26. The control panel of claim 25, wherein the input surface of the controller is disposed within a recess formed in the siderail when the controller is in the stored position.
27. The control panel of claim 25, further including a linkage assembly having an articulation arm pivotally coupled between the siderail and the bed to support the siderail during movement between the raised position and the lowered position, a first link, a second link, a third link, and a fourth link, the first link being coupled between the articulation arm and the second link, the second link being rigidly coupled to the third link, the fourth link being coupled between the third link and the arm, and the second and third links being pivotally coupled to the siderail by a pin, wherein the articulation arm pivots relative to the siderail during movement of the siderail from the lowered position to the raised position, thereby causing movement of the first link relative to the pin, pivoting of the second and third links about the pin, movement of the fourth link relative to the pin, movement of the arm relative to the pin, and movement of the controller from the stored position to the deployed position.
28. The control panel of claim 25, further including a spring coupled between the arm and the controller to bias the controller toward the deployed position, the controller being movable relative to the arm against the biasing force of the spring into the stored position.
29. The control panel of claim 25, further including a latch mounted to the siderail for movement between a latched position wherein the latch engages the controller to retain the controller in the stored position and an unlatched position wherein the latch disengages the controller.
30. The control panel of claim 29, further including a release mechanism configured to engage an engagement surface on a lever arm of the latch during movement of the siderail between the raised position and the lowered position to move the latch between the latched position and the unlatched position.
31. The control panel of claim 29, further including a manual release including a housing mounted to the siderail, the manual release being configured such that actuation of the manual release causes movement of the latch from the latched position toward the unlatched position.
32. The control panel of claim 25, further including an electronic drive mechanism including a sensor adapted to detect the siderail in a raised position and a motor coupled between the arm and the sensor, the sensor being configured to activate the motor when the sensor detects the siderail in the raised position, the motor being configured to move the arm relative to the motor when activated, thereby causing movement of the controller toward one of the deployed position and the stored position.
33. A control panel for adjusting a position of a bed, including:
means mounted to the bed for inhibiting egress from the bed, the inhibiting means being movable between a raised position and a lowered position;
means for controlling the position of the bed, the controlling means being coupled to the inhibiting means for movement between a deployed position away from the inhibiting means and a stored position substantially within the inhibiting means, the controlling means including means for receiving a user input to cause the controlling means to adjust the position of the bed, the input means being accessible by the user when the controlling means is in the deployed position; and
means for coupling the controlling means to the inhibiting means such that movement of the inhibiting means between the raised position and the lowered position causes movement of the controlling means between the deployed position and the stored position, respectively.
34. The control panel of claim 33, further including means for manually moving the controlling means from the deployed position to the stored position.
US11/040,272 2004-01-22 2005-01-21 Movable control panel for a patient support Expired - Fee Related US7200882B2 (en)

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Cited By (17)

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US7200882B2 (en) 2007-04-10
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US20070192958A1 (en) 2007-08-23

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